Disk harrow



s. w. CADY/ DISK HARROW.

APPLICATION FILED NOV.22, I9I8- Patented Oct. 241, 1922.

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DISK HARROW.

' APPLICATION FILED NOV. 22, I918.

Patented Oct. 24, 1922,

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To all whom 2'3 may concern:

Be it lmown that; I, em: Y 'W. Cons, a citizen of ore United sees, resi i n Auburn, in the county of (ayuga and tote 5 of New York, have invented certain new and useful provements in Disk Barrows, of which the following is o 5': clear, and exact specificeiion.

This invention relates to donhle -lso rows.

The types oi douhle dish herrows hitherto hown could not he hacked any greet distance without first straightening the gangs, pariicularly the gangs of the rear unit. This unit usually is hingedly con nected to the front unit e distance above the shafts of the gangs of both sections. Consequently in cooling, .the thrust is downward and the gangs oi the 2 rear unit are forced shorpl; into the ground especially if it is at all soft; as there is no rigid connection heicween the sections the front section will tend to rise and turn over the rear An ohjeci 01? this invenhion is therefore to provide e. double harrow in which the gangs of the her-row auhomeiically straighten on hacking, thereby permitling the her-row to be backed indefiniiely.

Another ohject is to provide a double herrow which aniomntically shraightens in heelsing, and which remains locked on e iorwerd pull in whatever position it is at the begin ning of rho forward poll.

Another object to provide e douhle dish .hcrrow with means for angling on e forward poll of the herrow.

These and other ohjecis as will appear in the following specifieafion, are accomplished 4 by my invention, which consists of a double herrow having from, and rear waits and means for straightening all gangs in the op eretion of Referring now to the drawings,

Figure 1 is a plan view of my harrow;

Fig. '52 is a vertical section tahm near the center showing the gangs straight and 3 is the same the gangs angled.

My invention is embodied in the double harrow as shown, comprising bent and rear units, the front unit having a fierne ll) on which is hingedly mounted two gangs 11 an the hinge points 1'2, 12, the rear nnit having a frame 13 on which is hingedly so mounted disk gangs 14: at the hinge points har- 15. it will he noticed that the e points are H1 311 cases outside the center oi the gangs so that as the ham-ow is drown forward jzhe inner ends of the fi'oni; gangs tend to swing heck as more dish are placed inslde the pivot points than outside. fining to the action of the ground on the rear disk which are dished in the opposite direcfion from those on the front gengsihe inner en s of the rear gangs are raised in hacking. This iorces'ihe onierends into the ground and causes them to sh'eiien. Brace l6 are fastened $30 the gang hearings 311st below the pivot points to forwerd-end or the ironic angles '50- The angle hers 1G and the *i-me e -Lee here connected therewith inchidin 5 elements 2dl'or the rear section conc a draft unit which moves relefively to the gangs during their pivot-oi. or mo- The inner ends of the i'omerd secured re as guide block 17 ehle between the fieme angles Beiween these englesispivotellymounted at 13 1W 19 which has a deieni, 20 in engagement th esector 21. The teeth of this sector ere made sloping toward the rear so lever raichets when pushed Q The lower end or the lever is connected to the inner ends of the fiont so the guide block 17 by links 22 and respectively The rear unit is connected to the front nnii; by means of two telescopic memhers 24, placed one on each s de of the center line. These are godly connected to fi'ont harrow unit so 25'and ere :Zorrned upper and lower members which lie shove and below the forward pan, of she 13, the upper member extending heck over ihe rear frame and through the goide looo 2-5. This allows the two frames to epproech eech other as the herrow is hacked or turned.

1% sliding block 27 having an arm 28 made slidable on two guide hers 29 which form a part of the rear flame. Two linhs 30 are pivotelly attached to the arm 28 and do the inner ends oi the rear gangs. 1onnection is made between the angling mom of the gangs of the front and rear uni- 5s by the link 31 which is pivoislly connected at the front end to the lever 19 and to the rear sliding block 27. An elongeied slot 32 is made in the rear end.

back the straighten owing to the action of the ground The result of the slot 32 is that as the har-' row is backed the front gangs will start to straighten before the forward end of this slot is reached and usually before the rear gangs start to straighten. The result of this arrangement is that as the harrow is forced front and rear disk on the disks as previously explained, and

the rear gangs are also straightened somewhat by the link 31 due to the straightening action of the front gangs. P

To angle the i n the operator pulls the lever 19 forward af h sr releasing the detent,

or the harrow may be pulled forward with .the detent released, when the gangs will angle due to the action of the ground.

1e I have shown and described but a single embodiment of my invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement of parts may be .made without departing from the spirit I block on the rear section, and a link connected thereto and to said first means for straightening the gangs of the rear section.

2. In a double disk harrow, front and rear sections, gangs on each section, a control lever connected to the inner ends of the front ratchet means cooperating with a paw or. said lever to permit it to swing freely in one direction and the front gangs to automatically straighten in backing, and

means connected to said lever for utilizing the action ofthe ground on the front gangs to straighten the rear gangs.

3. In a double disk harrow, front and rear sections, gangs on each section, a control lever connected to the inner ends of the front ga .-ratchet means cooperating with a paw on said lever to permit it to swing freelyin one direction and the front gangs to automatically straighten in backing, and means for communicating said movement to the rear gangs including a central angling link connected to said lever, a slidin block onthe rear section-and connected to t e rear gagi g and a connection between said rod and 4. In a double disk harrow, front and rear sections, gangs on each section, a control lever connected to the inner ends of the front gangs, ratchet means cooperating with 1'" a pawl on said'lever to permit it to swing freely in one direction and the front gangs to autematically straighten in backing, and

-means connected to said lever to straighten the rear gangs. said ratchet providing adjustable leaking means during return movemerit of s d lever for locking the gangs in various as; Zed positions.

In testimony whereof I aflix m signature.

SHERMAN CADY. 

